Jack for pumps and the like



April 6 1926.

D. K. CASON, J R.

JACK FOR PUMPS AND THE LIKE Filed Ap ril 10. 1924 5 Sheets-Sheet 1 A ril 6 ,1926.

D. K. CAESQN, JR

JACK F R PUMPS AND THE LIKE Filed April 10, 1924 5 Sheets-Sheet 2 April 5 1926. i,579,514

D. K. (JASON, JR

JACK FOR PUMPS AND THE LIKE Filed April 10. 192 4 5 Sheets-Sheet s April 6, T9261 1,579,514

D. Y K. cAsoN, JR JACK FOR PUMPS AND THE LIKE.

- Filed April 10, 1924 v 5 Sheets-Sheet 4 AK M ZIMMM meow;

April 6; 1926. 1,579,514

D. K. cAsoN, JR

JACK FOR PUMPS AND THE LIKE Filed April 10, 192A 5 Sheets-Sheet 5 I \I'\\I l I r (a:- h H L1}! 4/ 55 6 g 7A 134 l h u 3 3" q 35 I I l 32 4 .l I] I v m2. z i ll ll I'l II IL tangent. The resultis that the rod is pulled proximately vertical line without anyside V 1 -Pumps and the like, of; which thewfollowing.

' Y -Y- is construction similarto that shownjn ,Fig. 3,1but with adil 'ferentdriving means 7 v jack for lifting in a jstraig htgorapproxi j r 1 Patented I l l To all 'uilwm it concern;-

, Be it known ,thalltLDron K. C so Jr., ,a cit zen of-the United States, residlng. at Nacogdoches, Texas -have invented a certain new {and useful Improvement in Jacks'for is .a specification. 3 p v My invent on relates to 5:; reciprocat ng mately straight, line and, is particularly" adapted for ,pump ing operationsin oil and ,water wells, where it is desirable-to raise the pump ,rod vertically upwards.

It is also adaptable to ,drillingby standard methods. Inthe ordinary type of pumpingjack, the arm which ,engages the pump rod {for reciprocating the same travels in the arc; of a circle to which the pump rod is normally from the vertical at both the upper and lower. ends -of its stroke. This leads to" greaterfriction and avear upon thelrod and also to excessive vibration in the rod wh,ere by the crystallization .of the same .is :hastened. v j.

v:It is an objectof the invention to provide j ck whe eby t e pump 'rod' 1". drilling cable may' be raised or lowered in an ap v pull; I It is another-object to form aipumping inf lstallation which may be collapsed into-thederrick platform out of the way when de-' and the abrupt stop as the rod reaches the 'tion' are disclosed, Rig. 1-isa side elevation sired.

It is also an object of the inventionto pros deep Wells which ad upon the derrick platform. l

Another object is to prevent vibration and shock in the pump rod due to the usual jerk as the rod is stopped on the downstroke upper end of the str0ke,thus producing a smooth and quietvoperation; i

It is contemplated tha-t such a rig will be compact, light, and easily housed or moved whennecessary." It'will'be easily installed and operated. p I

Referring to the drawings herewith wherein several embodiments of'the invenof a-pumping jack employing my invention thereon; Fig; 2 is a top :plan View thereof showing also the means for ioperating the jack; lli-g. Q is a side elevation .of .a' different embodiment ofmy invention; Fig. 4;

' p vo al one andwall ws he beam "or'm'eoenocnnsflrnxss. W

AND THE LIKE.

1924. tseml. no. am

is we p n aw 1 or .t in 0d n1ent l e ina igt and iga sid el va on o Va st ;difi nn embodi ent ofithe nve tion; jgi- 1s a .const t ns mi ar to tha h w i 'Fig- 4, lustrating other d iving cqilnectioni with the p( )wer'Qshaft, and

emp oyedithere ith I I 1,11 the f rm of my i ve on Figs -.1 and ,I employ .a O StIi1 i0nfi01 4. The pump rod isqreci'procated through a b am 5 per orm ng he me f n tion {as th rd na y -wa k g be m. :Said beam placed in ,an;.in cli ned position, (the forward en 1 .head' 6 be ng m d up 3 f tw br cket '7, )7 s cu e to a d p je t ng f om ,the forward end of the. beam. These b ack ts a1e, per o. t t c1 to rec i e- .a crassp n 8. eu e in a c pingnie be 9 :upo

the puinp rai Y- Y.

The .heamii se u d at ts'l wer'endt a cross-head 10 .Y slidable in a -herizqnta g-uideway .li f upp rt up n thegsu'pports to V "the platformv 3. The connect-ion between'the -beam:5 ia-ndthe crosshead QI blOQk l9.,isga

pivot pin forming a connection betweenstiwo posts 13, 13 which ,are supported jat' their lower ends'iupon pins 14 securedin the sills 4 I of the. platform, as shown particularly in :Fig. 2. It .willbenoted thatthe pins 14 ,are

5 to swing directly oppositethe tubing 2 and vertically beneath theheadfi of the beam. 'I'contemplate making the length of the'lposts-13 ,as either itheiupperor lower arm's of:.tliebeam 5. Y i The beam 15 is given a reciprocating motion in a horizontal direction at. its lower,

--,end through a pitman 16 pivotally connected .to a cross-head or block 10. The said pitupon some-suitable supporting base, and is approximately half the length oftl1e beam 5, whereby the posts become the same length notatedfthrough a.gear,;22thereon having operative connection with a similar gear 22 upon a parallel .shaft 23, also journaled for rotation in bearings supported on said base. The shaft 23 is a power shaft rotated through connection with an engine shown diagrammatically at 24.

In pumping rigs such as are employed in the operation of oil wells, it is necessary at intervals to withdraw the pump rod or tubing from the well, and I have shown mounted upon the uprights 25 of the derrick, a

reel 26 for the cable. This reel may be operated at varying speeds through sprocket wheels 27 and 28 upon the shaft of the drum. These sprockets may be rotated through connection with similar sprockets 29 and 30 upon the shaft 23, as shown in Fig. 2. The manner in which the pump 5 is reciprocated through connection with the power shaft 23,

will be clear from the drawing without further description. The reciprocating of the beam 5, whereby the lower end is moved in horizontal plane,

-must always move in a vertical line which is a projection of the vertical side of the-triangle provided by the pump 1. It will therefore be seen that the head 6 will always describe a straight line vertically above the well.

In-Figs. 3 and 4 the installation is similar to that described in the first embodiment,

the position and shape of the parts being va.-

ried somewhat. The beam 31 corresponding to the beam 5 of the first embodiment has the head 6 attached to the pump rod 1, as previously described. The beam 31 is curved at 32, and the rearward ends is inclined up wardly away from the sill 4 of the derrick Immediately above the curved portion of the beam is a roller 33 mounted upon a shaft 34 in bearings 35 on the derrick platform. The roller shaft is firmly anchored to the platform so as to sustaina tendency of the beam 31 to be thrown upwardly in the operation of the pump.

At the rear end of the beam 31 I provide a bracket 36 extending upwardly from the beam and having a pivotal connection at 37 to a pitman 38 secured to a wrist pin 39 on a crank arm of the shaft 40 operated through the electric motor 41; between the motor 41 and shaft 40, may be used a gear reduction device shown diagrammatically at 42, by

be reduced.

the beam.

means of which the speed of the motor may The sprocket wheels 43 and 44 upon the shaft 40 provide means for the operation of a drum 26 mounted in the derrick 25. The supporting posts 45 are pivotally supported at their lower ends on pins 46 se cured in the sills 4 and the upper ends of these posts are pivoted at 47 to the beam 31, as in the previous modification.

In this embodiment it will be noted that the pivotal pin 46 of the post 45 need not be vertically below the head 6 of the beam, and also it is not necessary that the pivotal pin 47 be exactly midway-between the ends of A vertical motion of the head 6 may be accomplished however in this embodiment through the differential movement given to the rear end of the beam 31 as -it reciprocates. This is due to the particular curve of the beam where it bears upon the under side of the roller This curve is such that when the beam. is reciprocated through the pitman 38 the forward end or head 6 of the beam is constrained to move in a vertical line, as in the previous modification.

In Fig. 6 I have shown a construction practically identical with the one just described, except for the driving connection between the crank pin 39, and pitman 38 ally different from the one shown in Fig. 3,

but provides a somewhat more compact installation than shown in Fig.3 embodiment.

' In Fig. 7 the beam 31 is of the same shape as that shown in Fig. 6, and is adapted to operate in substantially the same way. It bears against the lower side of roller 33 at its rearward end, and-is supported ,on posts 45 approximately midway between the curved portion and the head 6. The head is engaged below the pins 8 upon the clamping member 9 of the pump rod 1,and operates as in the previously described construction.

The beam 31 is reciprocated in this embodiment by means of a. jerk line 56 connected with a power plant at some adjacent point. It is customary in pumping operations, especially in shallow wells, to operate a plurality of pumping jacks such as are here shown, from a central power plant which is connected with the pumping acks by means-of cables or rods such as is shown at 56. I contemplate attaching the line 56 to the pivotal point 47 of the jack, as shown in the drawing.

' In the embodiment disclosed in Fig. 5, the

arrangement of the parts is not greatly difie en from t at SIJQWII i B g. h b am.

5. i s nperz sd La poi t. m d ay be we ts ends t. ,2. in -1. Pest V .3 m u te 01 F1115 14 di etly benathth h d. O s hebQ -m- T e a d head. isshewn. a hav ng th brackets n heir pp rsides o re eiv thepin 8, 011;-

-- term torkepe at enin anonipac nesiti n" 7 provided with a recess or notch .the clamping member .9jof the pump rod.

, The lower end ofthebeam ,5 is pivoted 'at49 to .thelOWQrend of a supporting arm 5Q,,sa;id.ar1;n being adapted to swing upon a yoke .51 by means of a pm 52 on said arm. The yek fi i e re upe ac o m mb 5,3jof the derrick. fThe beam 5 may be re ciprocated through a. pitman 54 connected with a crank shaft. not shown.

I It willbemoted that the jmovement'zofgthe hea o the beam w l e app ox mately n a t aight lianarb t wi l J ary a shght amount from the vertical due to the fact that the point 49 at the lower end of the beam does not move in an exactly horizontal plane.

Asthe arm upon which the beam is supported may be made of such'lengthtl atits lower ends describe a large arc, the variation from the horizontal will be so slight as to not .materially effect the of the head 6. V

The type of jack illustrated in the drawings has certain points of advantage over the type of jack ordinarilyfemployed for pumping 0r drilling purposes. It provides a vertical movement of the pump rod withvertical movement but the usual sidemovement at the upper and lowerends of the stroke, and thus avoids a material amount of jar and vibration.

Furthermore, in the operation of pumping or drilling devices, the pump rod or drill cable is carried down by its own weight, and should be allowed tocomplete the downward stroke before the beam attempts to start the upward stroke. With this construction the pump rod may move downwardly to the end of its stroke without material strain upon the pumping apparatus. This is due to the fact that the arrangementof the apparatus is such that the tendency of the'beam is to allow the rods or tools to fall naturally, due to the connection of the supporting posts to the beam, and through the particular position of the pitman 16 and crank shaft relative to the power. The rapid movement occurs when the crank shaft 18 is in a vertical position, and the movement of the post 13 downwardly is most rapid when the angle below the post 13 and the beam 5"is an ob- It is. also to be noted that the speed of the upward stroke is slow as it approaches the upper end of the stroke, due to this sameconstruction, and the slowing down of the speed of the stroke allows the rod to stop before starting downwardly without material jerk upon theapparatus.

Another advantage is that the jack may fol'ddown into the floor of the derrick out of t e plat-1'0 th Pumping p a t- 'th w yw e i-n t i e." Th .:.t v,0. bra ke st- ..tu 1e he hea of the team wi l fi 911 9 11 1 thenppier nd 0i"- h tubing and es- 17mg,hand-i-hedefi w ll to d togeth rinto fl. s '1.- i l th lo r s asto b 1 Of the av) Another,edra tag i tha thesletlc mey b mo nt sl lne e he pl In thetype of construction shown in Figs. ands, it is gto-be noted that thestrain upon t e @P 'atf n 0f h e i kavi1 h nly hal fthatusually sustained. -This is due to the fact. that there is an upward thrust against the roller 33 approximately .equalto gthe load of the pump rod. 5 This isan advantage overthe usual construction where the beam is pivoted in the middle and the pull downwardly upon the rearward end of the beam. is equal to the load of the pump rod, thereby causing'a strain-upon the derrick platform equal to twice the'amount of the load. Furthermore, the movement of thedevice is largely in a' horizontal direction whereby the thrust of the power stroke maybetaken up easily by the sills of the derrick already in place during the drilling operation.

As previously stated, this construction is especially adaptable to pumping operations,

" but may also be used to advantage in drilling with reciprocating rigs. f It is also capable of application in other industries or situations where vertical upward lift is desirable. i

I do not wish therefore to be confined to V the particular use for the device described in the specification further than will come within the scope of the claims appended hereto.

Having thus described, invention, 1 what I claim as new and desire to protect by .il

Letters Patent is:

1. In a device of the character described,

a platform, a beam inclined relative tosaid platform, apost pivotally supported at its lower'endto said platform and pivotally connected at its upper end to said beam, an

upwardly curved lower end on said beam, a .roller above said curved end against which said lower end bears'and means to recipro cate said beams.

I 2. In a device of the character described,

an' inclined beam the upper headof which is adapted to be secured to a load, a post pivotally supported on a base and pivotally connected to said beam intermediate its ends,

an upwardly curved lower end on said beam,

a bearing means above said curved end, and means to reclprocate said beam.

3.In a device of the character described, a platform, a beam inclined relative thereto,

a post pivotally supported at its lower end Ill on said platform and connected at its upper end to said beam, a load engaging means at the upper end of said beam, the lower end being curved upwardly, a roller above said curved end, and means connected with said curved end to reciprocate said beam.

I. In a device of the character described, a platform, a beam inclined relative thereto, a post pivotally supported at its lower end on said platform and connected at its upper end to said beam, a load-engaging meansat the upper end of said beam, an upwardly curved lower end on said beam, a roller secured to said platform and en gaging above said curved end, and means connected with said beam to reciprocate the same.

5. In a device of the'character described, an inclined walking beam pivoted on a movable support, load-engaging means at its upper end, an upwardly curved lower end on said beam, and means acting as a guide for the lowerend ofsaid beam and serving to restrain the vertical movement of said lower end.

- 6. In a device of the character described, an inclined walking beam pivoted on a movable support, load-engaging means at its upper end, an upwardly-curved lower end on said beam, a roller above said curved lower end and acting to restrain its upward movement, the curvature of said beam allow ing an approximately vertical movement of said load-engaging end, and means to re ciprocate said beam.

In testimony whereof I hereunto afiix my signature this 29th day of March A. I). 19%.

DICK -KENDALL GASON, JR. 

